Need help finding the right parts for my '99 LHS

Hello!
I find it difficult to find the right parts for my car online to be honest.
Can anyone help me?

I am looking to replace

a) the automatic transmission filter as well as
b) the oil filter (will get rid of regular oil and replace with synthetic soon so need synthetic compatible oil filter). I also need to replace
c) all rotors and brake pads, all I know is that I have 17" rims and tires.

I am trying to go with Mopar parts if possible. I have a couple more general questions regarding my car so if someone really knows about that car/model and doesn't mind me asking a lot I would be thrilled to chat a bit.